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On 4月16日, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1966 - "The Dancing Floor" was first broadcast on BBC1.
- 1966 - Part one of the TV Comic story The Trodos Tyranny was first published.
- 1977 - Part five of the TV Comic story The Fire Feeders was first published.
- 1981 - The novelisation of The Enemy of the World was released by Target Books.
- 1987 - The novelisation of The Mind Robber was released by Target Books.
- 1992 - Cat's Cradle: Warhead was first published by Virgin Books.
- 1992 - DWM 186 was first released by Marvel Comics.
- 2005 - Aliens of London was first broadcast on BBC One. Later, I Get a Side-Kick Out of You aired on BBC Three.
- 2007 - Survival was released on Region 2 DVD.
- 2008 - Issue three of the IDW comic story Agent Provocateur was first published.
- 2008 - The Doctor Who: Battles in Time comic story The Creative Spark was first published.
- 2008 - The Skull of Sobek was first released by Big Finish.
- 2009 - Judgement of the Judoon, The Slitheen Excursion and Prisoner of the Daleks were first published by BBC Books.
- 2009 - DWA 111 was first released by BBC Magazines.
- 2009 - The audiobook version of Doctor Who and the Masque of Mandragora was first released by BBC Audio.
- 2013 - Toby Hadoke's Who's Round 12 was released online.
- 2014 - DWDVDF 138 was first published by GE Fabbri Ltd.
- 2015 - The Art of Doctor Who was released by Panini Comics.
- 2015 - Death Match was first released by Big Finish.
- 2015 - The audiobook version of Frontios was first released by BBC Audio.
- 2017 - Whovians first aired on ABC2 and iView.
- 2019 - Year of the Drex Olympics was first released by Big Finish.
- 2020 - Susan's War was first released by Big Finish.
- 2021 - Echoes of Extinction was first released by Big Finish.